function fea = DLBP(img, radius, neighbors, mapping)
%% select k_ratio biggest feature vector
    h = lbp(img, radius, neighbors, 0, 'h');
    h = h(mapping);
    fea = h(:);
    %if sum(h) == 0
    %    fea = h;
    %else
    %    fea = h / sum(h);
    %end
end